What does Jnz mean in assembly code?
Jump if not zero
JNZ is short for “Jump if not zero (ZF = 0)”, and NOT “Jump if the ZF is set”. If it’s any easier to remember, consider that JNZ and JNE (jump if not equal) are equivalent.
What is JB x86?
2. 1. IIRC, on x86 “JB” means “Jump if Borrow,” which would occur if the carry flag is set as pointed out by Simon… – stix.
What is JZ and JNZ?
JE and JZ are just different names for exactly the same thing: a conditional jump when ZF (the “zero” flag) is equal to 1. (Similarly, JNE and JNZ are just different names for a conditional jump when ZF is equal to 0.)
What is JZ x86?
The jz instruction is a conditional jump that follows a test. It jumps to the specified location if the Zero Flag (ZF) is set (1). jz is commonly used to explicitly test for something being equal to zero whereas je is commonly found after a cmp instruction.
What Jnz short?
Description. The jnz (or jne) instruction is a conditional jump that follows a test. It jumps to the specified location if the Zero Flag (ZF) is cleared (0). jnz is commonly used to explicitly test for something not being equal to zero whereas jne is commonly found after a cmp instruction.
How jump is different from Jnz?
This is performed by a set of jump instructions j depending upon the condition….Conditional Jump.
| Instruction | Description | Flags tested |
|---|---|---|
| JNE/JNZ | Jump not Equal or Jump Not Zero | ZF |
| JA/JNBE | Jump Above or Jump Not Below/Equal | CF, ZF |
How JMP is different from Jnz?
JMP . is essentially an infinite loop as the code will keep jumping back to itself infinitely until you get an interrupt . The JNZ statement is a conditional jump statement which will work as JMP when the zero flag is not set ( Z = 0 ).
What is Jnz in 8051?
The JNZ instruction transfers control to the specified address if the value in the accumulator is not 0. If the accumulator has a value of 0, the next instruction is executed. Neither the accumulator nor any flags are modified by this instruction. See Also: JZ.
What flag does CMP set?
The CMP instruction sets the flags as if it had performed subtraction on the operand. Subtracting 1000 from 1000 results in zero.
What does CMP do in x86?
The CMP instruction compares two operands. It is generally used in conditional execution. This instruction basically subtracts one operand from the other for comparing whether the operands are equal or not. It does not disturb the destination or source operands.